Gemini 1.5 Flash - No multimodal

I’m trying to use Gemini 1.5 flash to timestamp audio. I was able to get it working perfectly in Google vertex studio. I provided system instructions as well as a prompt. I was able to upload audio which was converted to 64 before being timestamped.

I’m trying to reproduce the same in buildship, but I’m not seeing any way to use the multimodal features with the current implementation of 1.5 flash.

I also tried using the AI node builder, but that failed as well.

Any help would be extremely appreciated.